US3529309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lavatory sanitation bodies
Assignee: Madison Chemical Co Inc
•
Filing: 1968-08-12
•
Granted: 1970-09-22
•
Expires: 1988-08-12
Abstract
No abstract record available.
Inventors
- 👤 Seymour Leavitt
- 👤 Selwyn J Ancel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:11
CPC Classifications
E; E03; E03D; E03D9/00; E03D9/02; E03D9/03; E03D9/032; A; A61; A61L; A61L9/00; A61L9/015; A61L9/04; A61L9/05; E03D2009/024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US680179A
Cited
US1067472A
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US1091265A
Cited
US1880912A
Cited
US2011732A
Cited
GB460041A
Cited
US2406902A
Cited
US2653156A
Cited
US3120005A
Cited
US2950959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |